Incubator-heater.



PATENTED JULY 17, 1906.

W. A. SUMNER. INUUBATOR HEATER.

APPLIOATIQN FILED MAR. 27, 1905 Tia; l'

mm w M m m M 1. 5 d H 1 w l W; W1 0 v V N B n W THE NORRIS PE1ERS co A5 I are n c wi/tmwwo UNITED STATES R WILLIAM A. SUMNER, OF FAIRFIELD,

PATENT OFFICE.

NEBRASKA, ASSIGNOR OF ONE- THIRD TO HENRY E. SPENCER AND ONE-THIRD TO CHARLES -J.

HARRIS.

lNCUBATOR-H EATER.

Specification of Letters Patent.

Patented July 17, 1906.

Application filed March 27, 1905. Serial N 0. 252,424.

To ctZZ whom it may concern.-

Be it known that I, WILLIAM A. SUMNLR, a citizen of the United States, residing at F airfield, in the county of Clay and State of Nebraska, have invented certain new and useful Improvements in Incubator-Heaters,- and I do declare the followin to be a full, clear, and exact description of t e invention, such as Will enable others skilled in the art to which it appertains to make and use the same.

My invention is an improved incubatorheater; and it consists in the construction, combination, and arrangement of devices hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a vertical sectional view of an incubatorheater embodying my improvements, and Fig. 2 is a horizontal sectional view taken on the plane indicated by the line a a of Fig. 1.

The boiler 1 has a vertical central flue 2 extending therethrough, the upper end of which flue projects slightly above the top of the boiler and forms a seat 3 for a damper 4. In one side of the boiler is a vertically-disposed tube 5 of suitable diameter, the lower end of which is open and is disposed at a suitable distance above the bottom of the boiler and forms a seal, as hereinafter described. A water-supply pipe 6 extends from the top of the boiler at a point Within the upper end of the tube 5. A funnel or chimney 7 is disposed and extends upwardly partly through the flue in the boiler. The latter is here shown as disposed in a casing 8. A suitable lamp 9 may be employed to supply the heat required to heat the water in the boiler. The products of combustion will escape upwardly through the flue, and by means of the damper 4 the degree to which the water is heated may be readily regulated. A flow-pipe 10 leads from the upper portion of the boiler at the side thereof opposite the pipe or seal 5 and discharges into a radiating tube 11, which maybe of any suitable form and of any suitable extent. A pipe 12 depends from the bottom of the boiler and communicates therewith at a point which registers with and is below the center of the lower end of the seal 5. The lower end of said pipe 12 is open and is provided with a cork 13, whereby it may be closed. A return-pipe 14 leads from the radiating pipe 11 to the pipe 12.

The operation of myinvention is as follows The boiler, together with the flow, radiating, and return pipes, must be filled with water through the pipe 6, and the latter must be partly filled. The lamp is then lighted and caused to heat the water in the boiler. As the heat increases the column of water in the pipe 10 becomes lighter than that in the pipe 14, with the. result that a circulation is caused through the radiating pipe. The water in the seal 5 does not commingle with the water in the boiler excepting at the bottom of the seal, which is directly over the pipe 12, through which the partially-cooled returnwater enters the boiler. Hence the partiallycooled water in and at the lower end ofthe seal 5 keeps the latter at a temperature which will condense such steam as seeks to escape from the boiler. Hence loss of water from the boiler is minimized by the seal. The pipe 6 in addition to its function as a fillingpipe also acts as an expansion-pipe, as will be understood.

From the fore oing description, taken in connection with the accompanying drawings, t e construction and operation of the invention will be readily understood without requiring a more extended explanation.

e casing 8 confines air around the boiler and minimizes the loss of heat by radiation therefrom.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

Having thus described my invention, what claim as new, and desire to secure by Letters Patent, is-

1. A heater pipe leading from the radiating element and discharging into the lower portion of the boiler, and a seal and expansion element to contain water, extending above the boiler, having a vent at its upper end and having its lower end open and extending downwardly in the boiler to a point immediately above and proximate to the discharge end of the return- 1 e. 2. A heater comprising a boiler, a flowpipe leading therefrom, a radiating element into which the flow-pipe discharges, a returnpipe leading from the radiating element, discharging into the lower portion of the boiler and having means to discharge the water from the boiler the radiating element and the flow and return pipes, and a filling, sealing and expansion pipe open at its upper end, extending upwardly from the boiler and having t its lower portion extending downwardlyin the boiler and its lower end open and disposed immediately abo ve and proximate to the discharge end of the return-pipe.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit- 15 HGSSGS WILLIAM A. SUMNER. Witnesses W. F. MFUEOR, S O. THOMPSON. 

